Call of Duty was released in 2003. Infinity Ward has been making new entries in the Call of Duty series ever since, but the studio told Develop it doesn't feel obligated to continue making new entries in the Call of Duty franchise. That doesn't mean we won't see further Call of Duty games from Infinity Ward, but there's no guarantee the company will keep making them, either.

"We take it game-by-game," explained Infinity Ward community manager and headline maker Robert Bowling. "We never worry about the future too much. Right now we wanted to make a sequel, so the entire team is hands on deck for making Modern Warfare 2. Then once this is done, maybe we’ll see about doing something new. If we do want to do something else, then we will do it. We don’t feel tied to making Call of Duty games. We still make Call of Duty games because we’re having fun doing it. And when it stops being fun, we’ll move onto something else."

Infinity Ward has denied the long-rumored sci-fi shooter the developer was said to be working on, but I gotta admit: I'd really love to see a hard sci-fi shooter from them. But given the amount of passion being poured into Call of Duty: Modern Warfare 2, if Infinity Ward can continue to push my buttons, I don't have a problem with them remaining there, either.